Winding spool



Sept, 28, 1954 c. K. DUNLAP WINDING SPOOL Filed March 27 1951 INVENTOR.

' CHARLES K. own/1P A 7 TOIPNEVJ Patented Sept. 28, 1954 WINDING SPOOLCharles K. Dunlap, Hartsville, S. 0., assignor t Sonoco ProductsCompany, a corporation of South Carolina.

Application March .27, 1951, Serial No. 217,745

2 Claims. 1

This invention relates to an improved construc tion for winding spoolsof the type having a barrel for supporting yarn windings, or the like,and flange-like head members mounted on each end of the barrel forretaining the windings thereon; and to a unique method for formingspools of this sort.

Such spools or carriers having a central barrel fitted with retainingflanges at each end are widely used in the textile industry and requirean inexpensive construction that is sturdy enough to withstand roughusage in order to be structurally and economically satisfactory.

In accordance with the present invention, there is now provided awinding spool formed entirely of paper or fibrous elements that lendsitself well to large-scale, low-cost manufacture, and that isexceptionally strong and serviceable. A particular feature of thewinding spool of the present invention is the manner in which the flangeheads are secured in assembled relation on the spool barrel.

The present invention is described in detail below in connection withthe accompanying drawings, in which:

Fig. 1 is a side elevation, partly in section, showing a winding spoolembodying the present invention;

Fig. 2 is a transverse section taken substantially on the line 22 inFig. 1; and

Fig. 3 is a fragmentary exploded view, partly in section, illustratingthe method by which the head members are secured on the ends of thespool body.

Referring now in detail to the drawing, and more particularly at firstto Fig. 1, the winding spool of the present invention, as indicatedgenerally by the reference numeral 4, comprises a tubular paper body 6that may be formed by convolutely or spirally winding a paper sheet inthe conventional manner to form a multi-ply spool barrel of any desiredwall thickness. If desired, the outer surface of this barrel 6 may betreated readily with resinous hardening agents and sized, as disclosedin copending application Serial No. 151,013, filed March 21, 1950, forexample, to impart a relatively hard finish, free of unevenness orirregularities. After the barrel 6 is formed in this manner, it isfurther swaged at its ends according to the present invention, asindicated at t in Fig. 3, in prepaartion for assembly with flange headsit as will be explained in further detail presently.

The head members in for the spool 4 are preferably molded of fibrousmaterial and may be formed suitably, for example, in accordance with thedisclosure of copending application Serial No. 738,052, filed March 29,1947, so that they are rendered tough and strong by resin impregnation.These head members 10 will in the usual case be circular in form asshown in the drawing, and are particularly characterized by a centralopening or perforation [2 having a serrated inner peripheral edge asshown at M in Fig. 2. The diameter of this central opening I2 asmeasured to the bases of the serrations M is substantially the same asthe outside diameter of spool barrel 6.

In assembling the flange heads it on the spool barrel t, the swaged downends 8 of the barrel 6 are first disposed through the openings i2 of thehead members It, and the ends 8 are then forced outwardly as shown at [4in Fig. 1 so that the serrations [4 at the openings 12 bite into andthereby become imbedded in and securely locked to barrel 8 with thebarrel portion Hi tapered or flared outwardly to maintain this relation.Both the inward swaging to form the barrel ends 8 and the outwardforming to provide the flared barrel portions l4 may be accomplished ina usual type of forming die, either one that is stationary or one thatis rotated to obtain a spinning effect. Also, the flared barrel portions[4 may be given a special resin treatment and then hardened to set themin place, and a treatment of this sort may be carried out by using aheated forming die, after dipping the swaged down ends 8 of the barrel 6in a suitable treating resin, such as a phenol-formaldehygde resin. toform the outwardly flared barrel portions 14.

If desired, the spool 4 may be further fitted with end bushings 16having bores as at it to receive spindles for mounting the spool 4during subsequent use. If such end bushings is are used, they shouldalso be flared outwardly to fit the flared barrel portions 14 andthereby further support the spool elements in assembled relation.

The present invention has been described in detail above for purposes ofillustration only and is not intended to be limited by this descriptionor otherwise except as defined in the appended claims.

I claim:

1. A winding spool comprising a multi-ply, tubular, paper barrel andcentrally perforated, relatively hard, flange heads mounted coaxiallythereon adjacent the ends thereof, said barrel being of uniform diameterbetween said flange heads, and said flange heads being secured toperiphery of the central perforation in said flange heads andsubstantially completely imbedded in the surface of said barrel byreason of an outward flaring of the end portions of said barrel beyondsaid flange heads.

2. A wmdingspoolicomprising a tubularbarrel of deformable paper materialand a pair of centrally perforated, relatively hard, flange head membersmounted coaxially thereon adjacent the ends of said barrel, said barrelbeing of uniform diameter between and through said head members, thecentral perforations head members being cylindrical in form withradial-1y projectng serrations disposed along the peripheral edge ofsaid central perforations and .imbedded in the surface of said barrel tosecure said heads thereon, the diameter of said central perforationscorresponding substantially at the base of said serrations with thediameter of said barrel between said head members, and said barrel beingflared outwardly at each end beyond said head members.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 1,157,666 Bennett Oct. 26, 1915 1,515,148 Clinton Nov. 11,1924 1,528,445 Marshall Mar. 3, 1925 1,670,022 Clinton May 15, 19281,731,219 Atwood Oct. 8, 1929 1,281,801 Baldwin Nov. 18, 1930 1,860,020Dunlap May 24, 1932 1,981,771 Benge Nov. 20, 1934 2,069,357 Din'ion Feb.2, 1937 2,368,025 Jamison Jan. 23, 1945 FOREIGN PATENTS Number CountryDate 118,568 Great Britain Sept. 5, 1918

